Yes, the Mac OS X requires this for now. However, we have developed a new utility application called "Bluetooth MIDI Connect" which allows you to easily connect Korg's Bluetooth MIDI compatible controllers. Please download it from the Mac App Store.
KORG app Help Center
Software is very good, connect to Bluetooth
Bluetooth MIDI Connect 作者是 KORG INC.
https://appsto.re/cn/_x6dcb.i
Bluetooth connectivity nanokontrol studio Input output